Marimo...the cutest plant i have ever seen..its a plant from japan and it cost bout RM80 i think..the size of the marimo is about as small as a ping pong ball once u buy it new but it'll grow a few cm in width every year..in other words it has no limit to its growth..if its kept for a really long time it can grow to be as big as a soccer ball ..but if kept fer even a longer time it can grow to be as big as a car tyre or if kept fer a much much longer time it can grow to be ..erm i dont know but VERY BIG...It Does not stop growing LOL !!! marimo !!!